surreptitious /sur-əp-tishˈəs/

1. Done by stealth or fraud
2. Stealthy

• epistolarian
• epistolarians
• epistolaries
• epistolary
• epistolatory
• epistoler
• epistolers
• epistolet
• epistolets
• epistolic
• epistolical
• epistolise
• epistolised
• epistolises
• epistolising
• epistolist
• epistolists
• epistolize
• epistolized
• epistolizes
• epistolizing
• epistolography
• epistrophe
• epistrophes
• epistyle